| Rich Igho Limited | Arts & recreation | 2017 |
| Rich&Bros Maintenance Ltd | Construction | 2025 |
| Richard Lukes Jewellery Limited | Administrative & support | 2011 |
| Richard-Darcy Limited | Real estate | 2013 |
| Richardson Murphy Ltd | Real estate | 2024 |
| Richardson Safety Consultants Limited | Construction | 2023 |
| Richbean Ltd | Other services | 2020 |
| Richesse Vida Limited | Arts & recreation | 2025 |
| Richie Cooper Limited | Transport & logistics | 2020 |
| Richlee Autocentre Limited | Wholesale & retail | 2023 |
| Richmercy Allied Services Limited | Health & social care | 2022 |
| Ricky Specialist Flooring Ltd | Construction | 2025 |
| Ricmer Integrated Services Limited | Information & communication | 2025 |
| Rico Sabor Dover Ltd | Hospitality | 2021 |
| Ridgeback Estates Ltd | Real estate | 2023 |
| Ridgeway TN10 Limited | Construction | 2025 |
| Ridley Group Ltd. | Administrative & support | 2017 |
| Ridley Lodge Limited | Administrative & support | 2002 |
| Riggerarney Ltd | Information & communication | 2014 |
| Rightmove Builders Ltd | Construction | 2024 |
| Ring O' ROZ Limited | Wholesale & retail | 2012 |
| Ring Rebellion Ltd | Wholesale & retail | 2026 |
| Ringway School of Motoring Limited | Other services | 2006 |
| Rinjo Ltd | Public administration | 2022 |
| Ripple and Stone Ltd | Professional & scientific | 2021 |
| Ripples Touch CIC | Other services | 2026 |
| Rise and Shine CS Ltd | Administrative & support | 2019 |
| Rising ALI Limited | Administrative & support | 2025 |
| Rising Rooted Village CIC | Education | 2023 |
| Rivan Group Limited | Construction | 2023 |
| River Accounts Ltd | Professional & scientific | 2022 |
| Riverbytes IT Solutions Ltd. | Information & communication | 2015 |
| Rivermaye Limited | Real estate | 1965 |
| Riverside Land & Property Ltd | Real estate | 2023 |
| Riverside MOT Centre Limited | Wholesale & retail | 2009 |
| Riverview Medical Ltd | Health & social care | 2023 |
| Riverview Drawing Services Ltd | Professional & scientific | 2021 |
| Riverview Farm Eggs Limited | Agriculture & fishing | 2011 |
| Riverview Fish Bar Ltd | Hospitality | 2019 |
| Riverview Park Barbers Limited | Other services | 2022 |
| Riverwood Resourcing Group Limited | Extraterritorial | 2018 |
| Rizai Property Ltd | Real estate | 2026 |
| RJ Eco Holding Group Ltd | Financial services | 2023 |
| RJ Gravesend Transport Limited | Transport & logistics | 2026 |
| Rj&J Services Limited | Wholesale & retail | 2020 |
| RJC Airconditioning Services Ltd | Other services | 2021 |
| RJH Estimating Ltd | Construction | 2020 |
| RJM Civil Engineering Limited | Construction | 2025 |
| RJP Confectionary Ltd | Wholesale & retail | 2025 |
| RJS Electrical & Property Services Ltd | Construction | 2020 |
| RK Cakes Ltd | Wholesale & retail | 2021 |
| RK Contractors (London) Ltd | Construction | 2014 |
| RKA Investments Ltd | Real estate | 2020 |
| RKB Concrete Ltd | Manufacturing | 2019 |
| RKB Haulage Ltd | Transport & logistics | 2013 |
| RKB Kent Concrete Ltd | Manufacturing | 2024 |
| RKN Services Ltd | Wholesale & retail | 2019 |
| RKT Gill Limited | Construction | 2017 |
| RL Drive Ltd | Transport & logistics | 2017 |
| RM Innovations Ltd | Information & communication | 2022 |
| RMG Solutions Limited | Information & communication | 2014 |
| RMM Construction UK Ltd | Administrative & support | 2026 |
| RMP Business Solutions Ltd | Hospitality | 2017 |
| RMT Atomfab Ltd | Information & communication | 2017 |
| RO Security Ltd | Administrative & support | 2019 |
| Ro&Ro Ltd | Real estate | 2020 |
| Road Transport (Leeds) Limited | Transport & logistics | 2022 |
| Robson Management Ltd | Construction | 2016 |
| Roby P Transport Ltd | Transport & logistics | 2019 |
| ROC Consultants Limited | Administrative & support | 1998 |
| Rochard Digital Limited | Administrative & support | 2023 |
| Rochester Lights Legacy CIC | Wholesale & retail | 2024 |
| Rochester Refurbishments Ltd | Construction | 2016 |
| Rochester Renovations Ltd | Construction | 2015 |
| Rock 2025 Ltd | Transport & logistics | 2025 |
| Rock and Roll Worldwide Ltd | Administrative & support | 2014 |
| Rocket Surfacing Ltd | Construction | 2024 |
| Rockfig Digital Limited | Financial services | 2025 |
| Rockfig Partners Limited | Professional & scientific | 2023 |
| Rocky Carpet Cleaning Ltd | Other services | 2020 |
| Rocky's Bakery Ltd | Wholesale & retail | 2023 |
| Rojo Limited | Health & social care | 2022 |
| ROK Trans Express Ltd | Transport & logistics | 2017 |
| Rollyns London Ltd | Construction | 2022 |
| Roma Court (Sevenoaks) Limited | Households | 2009 |
| Romford Tollgate House Ltd | Construction | 2016 |
| Romitorio Limited | Professional & scientific | 2024 |
| Ronaks Photography Ltd | Professional & scientific | 2020 |
| Ronic Trans Ltd | Transport & logistics | 2021 |
| Ronkz Limited | Administrative & support | 2014 |
| Ronnie AA Limited | Health & social care | 2020 |
| Roof Ways Ltd | Construction | 2025 |
| Roofs of London Ltd | Construction | 2025 |
| Roop Haulage Ltd | Wholesale & retail | 2020 |
| Rooprai Contractors Ltd | Construction | 2019 |
| Rooted in Christ Limited | Wholesale & retail | 2025 |
| Rosab Business Management Services Ltd | Financial services | 2019 |
| Rose and Crown (Shorne) Ltd | Hospitality | 2016 |
| Rose Building & Landscapes Ltd. | Construction | 2016 |
| Rose Family Care Ltd | Health & social care | 2025 |